1 files changed, 4 insertions, 3 deletions
diff --git a/Lib/aifc.py b/Lib/aifc.py
index c03446fee0..015d3985d6 100644
--- a/Lib/aifc.py
+++ b/Lib/aifc.py
@@ -281,10 +281,11 @@ class Aifc_read:
         self._convert = None
         self._markers = []
         self._soundpos = 0
-        self._file = Chunk(file)
-        if self._file.getname() != b'FORM':
+        self._file = file
+        chunk = Chunk(file)
+        if chunk.getname() != b'FORM':
             raise Error('file does not start with FORM id')
-        formdata = self._file.read(4)
+        formdata = chunk.read(4)
         if formdata == b'AIFF':
             self._aifc = 0
         elif formdata == b'AIFC':